A dart pad which can be easily embedded to mobile application with the help of web view.
Supports all the features listed in dart pad embedding guide

NOTE: Performance won't be great as it is working on web view.

import 'package:flutter/material.dart';
import 'package:flutter_dartpad/flutter_dartpad.dart';

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        body: DartPad(
          code: 'void main() => print("Hello DartPad Widget");',
          embeddingChoice: EmbeddingChoice.dart,
        ),
      ),
    ),
  );
}

Following are the embedding choices:

EmbeddingChoice.dart
Dart Embedding 
EmbeddingChoice.flutterShowcase
Flutter Showcase Embedding 
EmbeddingChoice.flutter
Flutter Embedding 
EmbeddingChoice.html
HTML Embedding 
EmbeddingChoice.inline
Inline Embedding

Inspired to make this package and some code was borrowed from dart_pad_widget

Libraries

flutter_dartpad